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Some Basic Concepts of Chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistrySome Basic Concepts of Chemistry3 Marks
Question
If two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in whole number ratio.
  1. Is this statement true?
  2. If yes, according to which law?
  3. Give one example related to this law.
✓

Answer

  1. Yes, the statement is true.
  2. According to law of multiple proportions.
  3. Hydrogen and oxygen react to produce two compounds, water and hydrogen peroxide. Masses of oxygen which combine with fixed mass of hydrogen are in simple ratio.
$\text{H}_2+\frac{1}{2}\text{O}_2\rightarrow\text{H}_2\text{O}\\^{2\text{g}}\ \ \ \ \ \ \ ^{16\text{g}}\ \ \ \ \ \ \ ^{18\text{g}}$

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